To make kinshi at home, sterilize 1 gallon (~4 L) hardwood sawdust with a pressure cooker at 250 °F (121 °C) for 2 hours. Add mushroom spawn to the cooled sawdust and keep it at 68-77 °F (20-25 °C) for 2 months. Then, mix it with flour, multivitamins and bran. Leave it for another 2 weeks. Always wear gloves when making kinshi.